Some multiple choice questions in Statistics

Question 1

What test would you want to use to test a nondirectional research hypothesis?

Answer

[removed]	A.	One-tailed test
[removed]	B.	Two-tailed test
[removed]	C.	Non-parametric test
[removed]	D.	Frequency test

0.5 points

Question 2

Approximately what percent of scores will fall within one standard deviation of the mean under the normal curve?

Answer

[removed]	A.	14
[removed]	B.	34
[removed]	C.	68
[removed]	D.	95

0.5 points

Question 3

The degree of risk you are willing to take that you will reject the null hypothesis when it is actually true is called ____________.

Answer

[removed]	A.	Statistical significance
[removed]	B.	Type II error
[removed]	C.	Type III error
[removed]	D.	Power

0.5 points

Question 4

If you posit a relationship between two variables as being positive (or negative), what type of test should you use?

Answer

[removed]	A.	Two-tailed
[removed]	B.	ANOVA
[removed]	C.	One-tailed
[removed]	D.	Cohen's d

0.5 points

Question 5

What does your research question help to guide?

Answer

[removed]	A.	Relationships
[removed]	B.	Hypothesis
[removed]	C.	Sampling error
[removed]	D.	Average score

0.5 points

Question 6

If the obtained value is less than the critical value, what should you do?

Answer

[removed]	A.	Reject the null hypothesis
[removed]	B.	Accept the null hypothesis
[removed]	C.	Set a higher p value
[removed]	D.	Increase your sample

0.5 points

Question 7

What is the term associated with how flat or peaked a distribution appears?

Answer

[removed]	A.	Ogive
[removed]	B.	Skewness
[removed]	C.	Kurtosis
[removed]	D.	Variability

0.5 points

Question 8

When describing a set of nominal data, a researcher should use which of the following measures of central tendency?

Answer

[removed]	A.	Mode
[removed]	B.	Median
[removed]	C.	Standard deviation
[removed]	D.	Mean

0.5 points

Question 9

When the sample accurately represents the population, the results of the study are said to have a high degree of _____________.

Answer

[removed]	A.	reliability
[removed]	B.	validity
[removed]	C.	consistency
[removed]	D.	generalizability

0.5 points

Question 10

When calculating the average for a set of data with extreme scores (eg. household income), which measure of central tendency would be best used?

Answer

[removed]	A.	mean
[removed]	B.	median
[removed]	C.	mode
[removed]	D.	standard error

0.5 points

Question 11

Which of the following is a measure of how well a sample approximates the characteristics of a population?

Answer

[removed]	A.	sampling accuracy
[removed]	B.	sampling error
[removed]	C.	sampling generalizability
[removed]	D.	sampling consistency

0.5 points

Question 12

What term is associated with scores that are at the extreme ends of the distribution?

Answer

[removed]	A.	Variability
[removed]	B.	Skew
[removed]	C.	Outlier
[removed]	D.	Percentile

0.5 points

Question 13

Which of the following provides you with a measure of how well your sample approximates the population?

Answer

[removed]	A.	Generalizability
[removed]	B.	Population
[removed]	C.	Hypothesis
[removed]	D.	Sampling error

0.5 points

Question 14

When are descriptive measures most often used?

Answer

[removed]

to describe how often something occurs

[removed]

to determine if a sample is representative of a population

[removed]

to predict an outcome

[removed]

to determine the effect of an intervention

0.5 points

Question 15

How are inferential statistics most often used?

Answer

[removed]

to infer to the quality of data collected

[removed]

to organize and describe data

[removed]

to make inferences from the sample to the population

[removed]

to plot the data

0.5 points

Question 16

What is the standard acceptable percentage used by social, behavioral and educational statisticians to determine the probability of an event occurring due to chance?

Answer

[removed]	A.	1 percent
[removed]	B.	5 percent
[removed]	C.	95 percent
[removed]	D.	99 percent

0.5 points

Question 17

What type of hypothesis posits a difference between groups where the direction is specified?

Answer

[removed]	A.	Nondirectional hypothesis
[removed]	B.	Directional hypothesis
[removed]	C.	Research hypothesis
[removed]	D.	Null hypothesis

0.5 points

Question 18

Which level of measurement is concerned only with the characteristics of an outcome that fits into a category?

Answer

[removed]	A.	ordinal
[removed]	B.	interval
[removed]	C.	rank
[removed]	D.	nominal

0.5 points

Question 19

What is the basis for the normal curve and inferential statistics?

Answer

[removed]	A.	mean
[removed]	B.	asymptotic
[removed]	C.	probability
[removed]	D.	symmetry

0.5 points

Question 20

Variability is a measure of how much individual scores differ from the ______________.

Answer

[removed]	A.	Mean
[removed]	B.	Range
[removed]	C.	Standard deviation
[removed]	D.	Variance

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